Electrochemical and dynamic light scattering measurements were performed to understand the growth behavior of cetyl trimethylammonium bromide (CTAB) micelles in aqueous KCl solutions in the presence of organic additives such as sodium salicylate (SS), sodium p-toluenesulfonate (SPTS) and sodium 3-hydroxynaphthalene-2-carboxylate (SHNC). The detergent concentration, C-d, of each solution is fixed at 0.025 M, the electrolyte concentration is 0.1 M KCl, but the concentration of the additive, C-s, is varied to induce the structural transition. The self-diffusion coefficient, D-m, of ferrocene solubilized within the micelles indicates a rapid growth of micelles above a threshold concentration C-s* of the additive. This behavior is an indication of the formation of long threadlike micelles and subsequent entanglement of these micelles for additive concentration exceeding C-s*. Our observations suggest that the micellar growth is governed by the electrostatic interaction of the surfactant headgroups in combination with the hydrophobicity of the additive. Screening of the electrostatic interaction decreases the surface area of the headgroup leading to an increase of the packing parameter, p, which in turn promotes the growth of the micelles. The process of growth of micelles as a function of the concentration of the additive was also monitored by probing the diffusion coefficient, D-p, of polystyrene (PS) probe particles incorporated in these micellar solutions. The D-p value decreases rapidly above a threshold concentration of the additive due to the confinement of particles in the network of polymer like micelles. The observed variation in D-p correlates with the self-diffusion coefficient, D-m, of the micelles as obtained from cyclic voltammetric measurements.